IEEE transactions on wireless communications, 2006-01, Vol.5 (1), p.57-60
2006
Volltextzugriff (PDF)
Details
- Autor(en) / Beteiligte
- Titel
- SNR gap approximation for M-PSK-Based bit loading
- Ist Teil von
- IEEE transactions on wireless communications, 2006-01, Vol.5 (1), p.57-60
- Ort / Verlag
- Piscataway, NJ: IEEE
- Erscheinungsjahr
- 2006
- Quelle
- IEL
- Beschreibungen/Notizen
- Adaptive OFDM has the potential of providing bandwidth-efficient communications in hostile propagation environments. Currently, bit loading algorithms use M-ary quadrature amplitude modulation of the OFDM sub-carriers, where the number of bits per symbol modulating each of them is obtained in order to maximize the performance. SNR gap approximation for M-QAM signaling makes the algorithms simpler to implement. However, in some circumstances it may be preferable to use. M-ary phase shift keying. In this letter an approximation is derived for M-PSK similar to the SNR gap of M-QAM so that bit loading algorithms can be extended to this type of modulation. In addition, the performance obtained when using M-PSK is compared to that of M-QAM in a practical situation.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1536-1276eISSN: 1558-2248DOI: 10.1109/TWC.2006.1576527Titel-ID: cdi_ieee_primary_1576527
- Format
- –
- Schlagworte
- Algorithms, Amplitude modulation, Applied sciences, Approximation, Approximation algorithms, AWGN, Error analysis, Error probability, Exact sciences and technology, Frequency division multiplexing, Mathematical analysis, Modulation, Multimedia communication, OFDM modulation, Phase shift keying, Quadrature amplitude modulation, Switching and signalling, Symbols, Systems, networks and services of telecommunications, Telecommunications, Telecommunications and information theory, Transmission and modulation (techniques and equipments), Wireless communication